Wells – Processes – In situ combustion
Patent
1975-09-22
1977-07-19
Novosad, Stephen J.
Wells
Processes
In situ combustion
166259, E21B 4324
Patent
active
040362990
ABSTRACT:
Liquid and gaseous products are recovered from oil shale in an in situ oil shale retort in which a combustion zone is advanced therethrough by a method which includes the steps of establishing a combustion zone in the oil shale in the in situ oil shale retort and introducing a gaseous feed mixture into the combustion zone in the direction the combustion zone is to be advanced through the in situ oil shale retort. The gaseous feed mixture comprises an oxygen supplying gas and water vapor and is introduced into the combustion zone at a rate sufficient to maintain the temperature in the combustion zone within a predetermined range of temperatures above the retorting temperature of the oil shale in the in situ oil shale retort and sufficient to advance the combustion zone through the in situ oil shale retort. The introduction of the gaseous feed mixture into the combustion zone generates combustion products gases which together with the portion of the gaseous feed mixture which does not take part in the combustion process, is called flue gas. The flue gas passes through the oil shale on the advancing side of the combustion zone, thereby retorting the oil shale to produce liquid and gaseous products. The liquid product and the retort off gas, which comprises gaseous product and flue gas, are withdrawn from the in situ oil shale retort at a point on the advancing side of the retorting zone.
REFERENCES:
patent: 3113620 (1963-12-01), Hemminger
patent: 3196945 (1965-07-01), Craig, Jr. et al.
patent: 3233668 (1966-02-01), Hamilton et al.
patent: 3400762 (1968-09-01), Peacock et al.
patent: 3521709 (1970-07-01), Needham
patent: 3548938 (1970-12-01), Parker
patent: 3577338 (1971-05-01), Gifford
patent: 3593789 (1971-07-01), Prats
patent: 3596993 (1971-08-01), Busey
patent: 3605890 (1971-09-01), Holm
patent: 3661423 (1972-05-01), Garret
patent: 3892270 (1975-07-01), Lindquist
Cha Chang Yul
Ridley Richard D.
Novosad Stephen J.
Occidental Oil Shale Inc.
LandOfFree
Enriching off gas from oil shale retort does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Enriching off gas from oil shale retort, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enriching off gas from oil shale retort will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2288905